About ToolHub

ToolHub is a collection of 10 free online tools built around one principle: your data should never leave your device. Every tool on this site runs entirely in your browser using JavaScript — there is no server processing, no database, and nothing is ever uploaded.

That design makes the tools fast (no network round-trips), private (we cannot see what you type, paste or calculate), and reliable (most tools even keep working offline once the page has loaded).

The site is free to use and supported by unobtrusive advertising. If a tool is missing or something looks wrong, we would love to hear from you on the contact page.